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Food Webs
Rose → aphid → ladybird. In this food chain, the ladybird is the secondary consumer.

Food Webs

Explore the wonders of KS2 Science with this quiz on food webs – the amazing cycles of who eats whom!

Food webs, or chains, reveal how living things transfer energy by eating. All plants and animals need energy to live. Plants, like grass, make energy from sunlight. Herbivores, such as rabbits, eat plants, passing on the energy. Predators, like foxes, eat herbivores, continuing the energy flow. These cycles are food chains.

What food do different organisms need? Where do they find it? What supports all life on Earth? Learn about producers and consumers in this fun quiz on food chains and food webs!

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1.
Which of the following support all life on Earth?
Insects
Mammals
Carnivores
Green plants
Because plants create their own food from sunlight, using photosynthesis, they are the only means of transferring energy from the Sun to all life on Earth
2.
Which of these species is a producer?
Polar bear
Algae
Shrimp
Cod
Producers are always green plants
3.
Which of these food chains is in the right order?
Shrimp → algae → cod → seal → polar bear
Algae → cod → shrimp → seal → polar bear
Polar bear → seal → cod → shrimp → algae
Algae → shrimp → cod → seal → polar bear
Arrows show the way in which energy is moving
4.
What must be at the beginning of every food chain?
A herbivore
A green plant
A decomposer
An omnivore
Plants always come at the beginning of a food chain, which is why they are known as producers - only plants can turn sunlight into food
5.
Rose → aphid → ladybird. In this food chain, what is the ladybird?
The producer
A decomposer
The secondary consumer
The primary consumer
The rose is the producer, the aphid is the primary consumer and the ladybird is the secondary consumer
6.
In a food web, green plants are known as producers. Why is this?
Because plants are not carnivores
Because plants are the most efficient at transferring energy
Because plants create their own food from sunlight
Because plants are inefficient at transferring energy
Plants use photosynthesis to convert sunlight into food
7.
In a food web, secondary consumers eat the primary consumers, or herbivores. Which one of these is a secondary consumer?
Fox
Caterpillar
Rabbit
Cow
Caterpillars, rabbits and cows are all herbivores and so primary consumers
8.
Which consumers eat only plants?
Herbivores
Omnivores
Carnivores
Other plants
Herbivores are called primary consumers because they are able to gain all their energy through digesting plants
9.
What is an omnivore?
An omnivore eats only green plants
An omnivore is a top carnivore
An omnivore eats both plants and animals
An omnivore is a decomposer
Humans are omnivores
10.
What does a decomposer do in a food web?
They provide food for herbivores
They recycle nutrients by feeding on dead and decaying materials
They convert energy from sunlight into food
They create soil
Decomposers include earthworms, woodlice, fungi and bacteria, and represent the end of any food web because they feed on dead organisms
You can find more about this topic by visiting BBC Bitesize - What is a food chain?

Author:  Sheri Smith

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